Fastener-applying implement



May 14,

A. H. MAYNARD v FSTENER APPLYING IMPLEMENT Filed April' 5, 193s 2 sheets-Sheet1 May 14, 1935.

A. H. MAYNARD FASTENER APPLYING IMPLEMENT Filed April 5; 1933 2 Sheets-Sheet 2 Patented May A14; 1935 I Parrain" oi-Fics' 2,001,104 FAs'rENEn-APPLYmG mmm* Arthur n. Maynard, Warwick, a. I.,

Boston Wire Stltcher minor to Company, Portland,

,:.Maine,.a.eorporation of Maine s Application April 5, 1933, Serial No. 664,568

- Claims.

` This invention relates to improvements in stapling implements or tackers for use in attaching tags and labels to boxes and cases, for tacking papers or drawings to a board and for securing various other articles to different objects.

One object of the invention is to provide a simple, compact appliance of the type indicated which is convenient to operate and eiiicient in use for the purposes specied.

Another object of the invention is to provide an implement of the type indicated having a `magazine with a gate or door adapted to be opened to permit loading the machine with staples or other fasteners and in which is incorporated means for guiding the fasteners in drivingthem into the work. t

Another object of the invention is to provide an implement of the type indicated having automatically-operated means for gripping the staples when the gate is opened to prevent them from being expelled from the magazine by theffeeding l means.

Another object ofthe invention is to provide an implement of the vtype indicated havingA means for withholding the staple-gripping means from engagement with the staples when 'it is desired to remove the staples from the magazine. y

Another object of the invention-is to provide an implement of the type indicated having its magazine .and staple-feeding mechanism embodied in a unit adapted for convenient application to and removal from the main frame ofthe device so that other units may be substituted therefor to render the appliance capable `of operating on different sizes of staples.

Another object of the inventionis to provide an implement of the type specified havingiits parts designed for economical manufacture and convenient assembly.

Another object of the invention is to provide an implement .of the type indicated which is strong and staunch in structure and proof against derangement or getting out of order under roughv handling in use.

Further objects of the improvement are set forth in the following specification which Adescribes a preferred embodiment of the invention, by way of example, as illustratedby the accompanying drawings. In the drawings: Fig. l is a side elevation of a stapling implement or tacker embodying la preferred form of construction ofthe invention;

Fig. 2 is a similar viewv of the implement, part sectional in a medial longitudinal plane;

Fig. 3 is a sectional planview of the lower porrcasting to `without machining constituted by a base 3 provided on its bottom tion of the implement. taken on line I-l of Fig. 1;

Fig. 4 is a front elevation of the implement; Fig. 5 is a sectional view of the magazine of the implement taken online 5-5 of Fig. 1;

Fig. 6 is a sectionalview of the forepart of the implement showing thegate opened to permit loading thefmagazine with staples and illustrating the manner in which the staples are held therein by means of the retainer-pawl;

Fig. 7 is a front view ofthe main frame implement; f

, Fig. 8 is a perspectivel view of the staple-core and -its holder; v

Fig. 9 is a perspective view of the magazine i5 gate; and

Fig. 10 is a side view of the front end of the implement showing a modified form of construction.

' The invention consists in a stapling implement 2o or tacker adapted to be conveniently held inthe hand to be placed against the work and having means` operated from a plunger to drive the staples, tacks or Vother fasteners into the work'. The implement is provided with a magazine lforl 25 containing a supply of 'staples or the /like vand automatically-operated means for successively 1o of the .feeding the staples or other fasteners to the ment with fasteners without the necessity of removing the staple-feeding mechanism, and

'means cooperating therewith act to retain the unused-staples in the magazine to prevent them from being discharged therefrom during the reloading operation.

litefe'rringgto the "drawings,the implement as herein illustrated comprises a main frame 2 which may be constructed in the form of a dierender it economicalV to manufacture 4o operations. The frame 2 is with longitudinally-extending side-flanges or feetsand having a head-portion or housing 5 rising from its forward end. The head 5 and 45 base 3 are connected by a suitable handle-portion 6V which provides'a grip for holding the implement and applying it to use. The base 3 ofthe frame 2 is cored o ut to form a longitudinal cavityv or pocket 1 which extends from ,end to end there- 50 of and is closed atits rearward end by a wall 8. Removably held in the cavity or pocket l is a staple-core I0 for supporting the staples in alined relationship in themagazine. yA staple-pusher 25 is mounted to slideonthe core it to propel 56 the staples'therealong whereby to successively feed them to the staple-driving means in the head 5.

Referring to Fig. 8, the staple-core I 0 is preferably constructed from sheet-metal, being of substantially U-shape or trough-form with a bottom and opposite side walls I2 rising therefrom. The side walls I2 are bent'or folded inwardly at the rearward end of the core to lprovide rests or abutments I3 against which a rectangular blocker plate I4 seats, the block being shown in full lines in Fig. 2 and indicated by dot-and-dash lines in Fig. 8. Ears I5 sheared from the metal of the side walls I2 of the core 10 are bent inwardly with their edges in position to hold the block |4 against the abutments I3. 'Ihe block I4 is provided with a threaded hole I6 for receiving the'end of a screw, to be later described, which secures the core in place in the frame 2. One of the side walls I2 of the core is provided near its forward end with an ear I1 projecting inwardly toserve for a purpose as later explained. g

'I'he forward ends of the side walls I2 of the core Ill are cut away at the bottom to-provide a recess for the gate which closes the end of the magazine; the upper overhanging portions I8 of the walls forming guides for the staples as they are fed off from the core and driven down into the work in the manner as later more fully explained. Extending between the sides of the core I0 and riveted to the walls' thereof is a crosspin I9, on which i's rotatably mounted a roller 20 used as a support for a helical wire spring 2| which is connected to slide the staple-pusher 25 on the core to feed the staples therealong.

The staple-pusher 25 is of conventional form as constructedl from a sheet-metal strip bent into inverted U-shape to adapt its sides to straddle the sides of the core I 0 to slide thereon. At the rearward end of the pusher 25 is an ear 23 bent .y down between its sides and formed with an aperture-through which helical spring 2|.

is hooked the end of the The spring 2| extends forthe spring 2| draws the staple-pusher 25 forwardly on the core I 0 its coils will readily pass over the roller 20 as the spring is contracted in length. ,f

The core I0 and the assembled staple-feeding means, consisting in the pusher 2|, are assembled in the frame 2 as a unit inthe manner as next explained. Welded or otherwise suitably secured to the bottom wall II of the core I0 is a at strip of sheet-metal constituting a base-plate 26, the lateral edges of which are bent flanges|4 of the frame 2, see Figs. 3, 4, '7 and 8. Preferably, the upper edges of the longitudinal flanges"4 are recessed at 29 as shown in Fig. 7 to receive the edges of the runners whereby to form a smooth, flush joint. The base-plate 26 projects rearwardly in a tongue-portion 29 which is adapted to seat in a notch or recess 9 formed in the bottom-of the rearward end of the frame 2, see Figs. 2 and 3 of the drawings. The staplecore I0 is assembled in the frame 2 by simply Vsliding its runners 21 along thetside-anges 4 thereof until the end of the tongue 29 on the base-plate 26 seats in the notch 9. A screw 30 25 and spring` vpin 50 extends through is inserted through an aperture in the end wall 8 of the frame 2 with its head countersunk therein and by screwing its threaded end into the block |4 the core is secured fixedly in place within the bottom cavity or pocket 'I which forms the magazine for the staples.

It will be noted from Figs. 1 and 2 of the drawings that the lower side walls of the frame 2 are cut back from in under the head 5 so that the staple-core I 0 and its base-plate 26 project forwardly therebeyond. It will also be observed by reference to Fig. 8 that the forward portion of the base-plZte 26 is beveled oif and narrowed along its sid s, this provision being made to adapt the gate for the magazineto close down over the forwardendv of the vcore in the manner as later explained.

Extending vertically within the head 5 of the frame 2 is a bore 32, in which is slidably mounted a plunger 33. The lower end of the plunger 33 is slotted diametrically at 34 to adapt it to receive the upper end of a. stituted by a flat, hardened plate or blade. A stud 31 inserted through a vertical slot 39 in the frontof the head 5 and a bore in the forward side ofthe plunger 33 has its reduced threaded end`36 projecting through an aperture in the staple-driver and screwed into a hole in the plunger. 'I'he staple-driver 35 extendsvertically below the plunger 33 with its rearward face in line with the edges of the forwardly projecting portions I8 on the end of the staple-core I0. Normally, the lower edge of the driver is raised above the top of the core I0 as shown in Fig. 6 to adapt it to be slid down to impinge against the head of e a staple fed oi from the core to drive the latter down into the work. The plunger 33 is reciprocated in the head 5 under the pressure of the hand on a knob or hand-rest 40 secured to its upper end. The plunger 33 is held in raised position under the force of a helical wire spring 4| coiled around its upper portion and bearing against the top of the head 5 and the underside of the knob 40. The upward movement of the plunger 35 under the pressure of the spring 4I yis limited by the engagement of the stud 31 with the end of the slot 39 in the head 5, it being understood that the stud slides vertically in the slot 39 during the reciprocation of the plunger. The staple-driver slide down through a throat gate 45 which is constructed next described.

Referring to Fig. 9 of the' drawings, the gate 45 is preferably constructed of sheet-metal shaped to form a forward wall 46 with side walls 41 projecting at right-angles thereto.- The upperportions of the side walls 41 takev the form of ears 48 pierced with apertures 49 by means of which the gate is hinged to the head 5. As shown most clearly in Figs. 3 and"7, theforward end of the head 5 is provided with a rectangular opening 43, to the sides ofwhich the ears 48 of the gate 45 are pivoted by means of a cross-pin 50. The the sides of the head 5, being formed with an enlarged head 5I fitted to a or guideway in the in the manner as hole in one side of the head and having a reduced portion 52 head 5I of 35 is arranged to staple-driver 35 which is conpin 56. The lower end of the spring 53 may be sprung outwardly and swung to one side-to permit removal of the pin 50.

The lower portion of the gate 45 has its sides bent around or folded inwardly to form lugs or abutments 55 overlying the face of its front wall 46 in spaced'4 relation thereto to provide a throat with guideways 58 through which the staples slide as they are driven down` under the force of the'driver 35. The bottom portion of the gate 45 is preferably 4narrower than its upper part and of such width as to cause -its sides to apply frictional resistance to the passage of the staples through the guideways 58 whereby to prevent them from dropping down through the gate before they are acted on by the driver. The abutments cr .lugs 55 are adapted to seat in the recessed forward end of the staple-core l beneath the projecting upper portions f8 of its side walls l2 when the gate is in closed position as shown in Figs. l and 2 of the drawings.

The gate 45 is maintained m'clgsea position and also held in open position by means yieldablyengaged with the edges of its hinge-ears4 48. For this purpose the edges of theears 46 are formed with arcuate cam-faces 56 merging into nat beveled faces 51 as shown most clearly in Fig. 9 of the drawings. Referring to Figs. 2 and 3 of the drawings, a, plunger-block 68 slidable in a slot 6I in the head 5 of the machine is' operated by springs 62 to causel its forward beveled face 63 to act against th'e faces 56 and 51 ofthe hingeears 4.8 of the gate 45. The springs 62 are pocketed in bores 64 in the block 60 with their reari ward ends bearing against the end of the slot 6| to press the block forwardly. With the beveled face 63 of the block bearing against the beveled edges 51 on the ears 48 of the gate the latter is maintained in closed position Awith its lugs 55 abutting the forward recessed end of the staplecore i6. The gate 45 may be opened manually by swingingl it on its pivot-pin 50, the beveled faces 51 of the ears 48 causing the block`60 to slide" rearwardly to eventually engage its beveled forward face 63 with the arcuate edges 56 of the hinge-ears as shown in Fig. 6. In this latter position the spring-pressure of the plungerblock 60 acts to frictionally hold the gate open.

Projecting forwardly within the lowerl opening '43 of the head 5 is a rectangularly-shaped tongue 65, see Fig'. '1, having its oppositel faces spaced away from' the sides of the opening to accommodate the ears 48 of the gate 45 ltherebetween; it beingl noted that the tongue is provided with a `lateral hole 66 through which the pivot-pin 50 for the gate extends. The forward face of the tongue 65 forms a rest or bearingvfor the staple-driver 35 to take the rearward thrust thereof and steady it yduring its reciprocation. The main purpose of the tongue 65, however, is to serve a support for a retainer-pawl 16 which operatesiy as a check or detent to prevent the staples from being ejected from the end of -the Amagazine when the gate 45 is opened. The

tongue 65 is formed with a central vertical slit 61 for receiving the flat sheet metal pawl 16 which lis pivotally mounted on the pin50 forthe gate `115.

'I'hepawl ,10 has a pointed toe 1l overlying the top of the/ staple-core I0 and adapted to engage vwith the'f/crossbars or heads of thel staples 's strade died attesa-the core. The toe 1| of the pawl 1n is 'carried/ into engagement with the heads of the staples( under/the pressure of a plunger-pin 12 slidably mounted in a bore 13 inthe head 5 with matically released from the-staples to allow them to be fed forward onthe core, the means for performing this function being arranged as next described. The pawl V1|) has an upward projection or head 15 formed .on its rearward edge with a beveled face 16 corresponding to the beveled edges 51 on the ears of the gate 45. The beveled edge 16 is'adapted to be engaged by the forward beveled face 63v of the-plunger-block 60 when the latter is slid forward from the position shown in Fig. 6 to that illustrated in Fig. 2 during the closing of the gate 45. This engagement of the block 60 with the beveled edge 16 of the head 15 rocks the pawl 10 to lift its toe from engagement with the heads of the staples sas clearlyillustrated in the view last referred to.I

In some instances it may be desired to remove unused staples from themagazine of the implement and to accomplish this purpose the pawl 16 may be released by manual means as next described. Referring particularly to Figs. 2 and 6 of the drawings a plunger-pin 80 is mounted in a horizontal bore 8|.in the lowerpart of the head just above the base-portion 3 of the frame 2 with its rearward end projecting into position to be engaged with a finger of the hand. The forward end of the pin 88 has an enlarged head 82 seated in a counterbore 83 and formed with a beveled, projecting end 84. The beveled end 84 of the pin 80 projects into an angularl notch 85 formed in the rearward portion of the pawl 10. The notch 85 is so shaped that its edges are normally clear of the beveled end of the .plunger-pin 80. When the gate 45 is open, however, and the pawl in position with its toe 1I engaging the head of a staple thelplunger-pln may be manually pushed forwardly to engage its end with the uppermost edge of the notch whereby to rock the pawl to release it from. the staples to permit their withdrawal from the magazine.

4The method of operation -of the implement is as next explained: To load the magazine with staples the gate l is opened by grasping its sides `on the beveled face 63 of the block 60 and the frictional engagement therebetween tends to hold the gate in. open position as shown in Fig. 6 of the drawings. The retraction of the plunger-block 60`removes'its pressure on the beveled edge 16 of the head 15 of the pawl 1li and thereupon the plunger-pin 12 acts on^the to@ 1I of the -pawl to engage it with the head of one of the staples s if any remainpn the core i8. Should there be no staples in the magazine the pusher 25 will have 'ben drawn forward until its rearward finger 23 .engages the inwardly projecting ear i1 on the side of the core I Il so that the pusher is prevented from sliding off the end of the core. f

The staples are usually packaged instrip or stick form with their headscemented or otherwise fastened together to adapt them to be individually broken away from the strip. Supplied in this formas/ a rell the stick may be inserted into the magazine of theimplement by simply the core I0.

lthe plunger 33 will be size substituted therefor.

placing its end on the core I0 and pushing itinwardly to slide the staple-pusher 25 rearwardly against the tension of its spring 2 i As the staplestick is inserted into the magazine in this manner the toe ofthe pawl 10 rides across the heads of the staples s to prevent the stick or refill from being forcibly ejected from the magazine when pressure on its end is released. After the stick has been slid clear into the magazine the gate is'closed by merely swinging it down against the frontof the core I0. As the gate 45 is swung down into closed position as shown in Fig. 1 the arcuate edges 56 of its ears 48 ride across the end of the plunger-block 60 to allow the latter to slide forwardly with its beveled face 63 engaging the beveled edges 5l of the ears 48. The pressure of the plunger-block 60 under the force of its spring 62 thus has the effect to resist the opening movement of the gate 45 to hold it firmly in place, closed against the end of the core I0.

As the plunger-block 60 slides forwardly upon the closing of the gate 45 its beveled face 63 comes into engagement with the beveled face 'I6 on the retainer-pawl 1I), thereby acting t rock the latter'to free its toe 1I from the staples s on The staples are thus released to allow them to be slid forward by the pusher 25 until the foremost staple in the strip brings ,up against the forward wall 46 of the gate 45. In this position the forward staple is located beneath the bottom edge of the driver 35 to adapt yit tov be driven down through the guideways 58 in the gate 45.

In applying the implement to use the operator grasps the handle 6 and places the bottom of its flat base 3 against the work to be stapled. While holding the implement in this position the other hand is pressed against the knob 40 to slide the plunger 33 down through the bore of the head 5. As the driver 35 is thus caused.to descend its lower edge impinges against the head of the foremost staple s to drive the latter down through the throat of the gatey 45 and into the work. After the staple has been driven into the work pressure on the knob 40 is released, whereupon returned. to irst position by the recoil of its spring 4 l. As the staple-driver 35 is elevated above the top of the core I0 the staples are again fed forward by the pusher 25 to locate the foremost one beneath the bottom edge of vthe driver; the operation of applying the staples being continued in this way until the supply in the magazine is exhausted.

If the supply of staples is replenished when only a few remain in place on the core I 3, such unused staples are prevented from vbeing ejected from the magazine even though the last one in the series has been fed forwardly beyond the toe of the pawl' 10. To provide for this contingency. the staple-pusher 25 is scored on its top with serrations 33 which are engaged with the toe of'sthe pawl in the same manner as the heads of the staples. i

The implement is ordinarily fitted with a predetermined size of staple-core and the other parts' made complementary thereto for use with the desired wider or narrower staples the magazine -and its assembled staple-feeding`means may be removed from the machine and another unit of different The magazine may be easily removed lfrom the. implement by releasing its holding screw 3l and sliding it out from the front of the cavity or opening 1. It will be understood that to remove the magazine the pawl size of staple. When it is required to use,

10 must be released from the staple-pusher 25 and this is readily accomplished by manually k'sliding the plunger-pin 80 to cause its beveled end to act on the edge of the notch 85 in the pawl to lift its toe in the manner as previously explained. It should be noted that when a core is replaced with one of different width to adapt the implement for wider or narrower staples, as the case may b, the driver-plate 35 and the gate 45 must also be replaced with others of the appropriate dimensions.

Fig. 10 oi' the drawings illustrates a modified form of construction -of the gate for the magazinel oi' the implement. Whereas, in the form of construction previously described the bottom of the ,gate 45 is ilush with the flat base of the implement, in the modified construction shown in Fig. 10 the gate projects below the base to adapt it to be inserted into a groove or opening in the object to be stapled. For example, with this type of gate the implement may be used for stapling or tacking upholsterybinding tape and similar materials to furniture, automobile interiors and the like. The method of operation of the implement having the gate constructed in accordance with this last described form is substantially the same as previously explained. That is to say, the binding tape or other strip material t is placed' in position on the object to which it is to be attached and the bottom of the gate 45 is then inserted between its. folds in the manner as illustrated in Fig, 10. The staples s may be driven through the tape by operating the implement in the manner as above explained vwhile sliding it lengthwise of the tape after each operation without removing the throated end of the gate therefrom:

It will be observed from the foregoing that the present invention provides a conveniently operated implement for applying staples and other forms of fasteners to attach various objects and I articles and for other types of work. The novel form of construction of the implement provides the advantages hereinbei'ore particularly pointed out and further renders it most efficient for the purposes set forth and durable in use over long,

periods. v

While the implement is herein described and illustrated as .embodied in a preferred form of construction, various modifications may be made in the structure and arrangement of its parte without departing from the spirit or scope of thel der side, fastener-applying means carried by said frame, a core adapted to support a. series of fas- 'teners to successively feed them to the applying means, said core having runners on its sides, and means on the outer sides of the base of the frame engageable with the runners by sliding the core intothe slot to support the core in operative position on the frame. v

2. In an implement of the type indicated, the combination of a frame having a relatively fiat base with a longitudinal slot open on its under side, fastener-applying means carried by said frame, a core adapted to support a supply of fiasteners in position to be fed to the applying means. said core being slidable into the longitudinal slot in the base of the frame, means interengageable between the sides of the core and the outer sides o i' the base to support the core in position in the nally-extending walled chamber having flanges.

slot in the base, a pusher'slidable on the core to feed the fasteners therealong, and a spring enclosed within the core and anchored thereto at one end with its oppositeend attached to the pusher to slide the latter on the core.

`3. In an implement of the type indicated, the combination of a frame having an upper handle and a channeled base therebelcw formed with a longitudinally'extending chamber on its under side providinga magazine for fasteners, said base also provided with longitudinally extending projections on its sides, fastener-applying means carried on said frame, a core adapted to be 'inserted into the chamber and; formed with lateral projections shaped to embrace the projections on A the sides of the base of the frame to adapt it to be removably positioned in the chamber to support a series of fasteners in-the magazine, and means for sliding the fasteners on the core to feedI them successively to the applying means.

4. In an' implement of the type indicated, the combination of a frame formed with a longitudiprojecting laterally from its sides, fastener-applying means carried by the frame, and a core having laterally .projecting runners shaped to embrace theiilanges on the frame to adapt it to be inserted into (the chamber thereof to support a series of fasteners for delivering them 'successively to the applying means.

5. In an implement of thev type indicated, the combination of a' frame having a longitudinallyextending chamber on its under side, flanges pro-v jecting from the side walls of the chamber, fasten-- er-applying means carried by the frame, and a core for supporting a series of fasteners in posi' tion to be fed therealong and having runners slidl ably engageable with the flanges on the side Walls of vthe chamber to adapt'it to be removably posi-v tioned therein. y'

6.',In an implement of the .type indicated, the

' combination of a frame formed with a longitudinelly-extending chamber with flanges on its sides,

- 'fastener-applying' means carried by the frame,

` and a core having opposite parallel sides adapted to be positionedin spaced relation to the lsides of the chamber in theframe, said core having runners engageable with the flanges on the sides of the chamber to adapt the core to be slid into 7. In an implement combination of a frame having a cavity on Aits lunder side with flanges projecting laterally from the walls thereof, fastener-applying means carriedfby the frame, and a core'for supporting a series of fasteners slidably mounted thereon, said core comprising a base-plate having runners on itssides slidably engageable with the \anges w on the'frame and formed with upstanding side of the core to slide on the upper edges thereof and provided with an ear projecting downwardly therebetween, and a spring attached to the ear on the pusher and extending therefrom within \the side walls of the coreA with its opposite end anchored therein to cause it to draw the pusher along the core.

10. A unitary supply-holder and feeding means for fastener-applying implements comprising a core having a bottom, spaced side walls projecting upwardly therefrom and a cross member extending therebetween at one en d of the core, a pusher of inverted U-shape adapted to straddle the sides of the core to slide therealong, and a spring attached to the rearward end of the pusher and extending between the side walls of the core around the end member thereof wimitsopposite end secured to the rearward end of the-core.

i ,11. In an implement of the type indicated, the combination of a frame having a head formed with a bore and. a sl-ot in the side ofthe head opening in to its bore, a plunger slidable in said bore and provided with a diametrically-arranged axially extending slot, a driver-blade held in said slot in the plunger, and a stud extending through i v the slot in the side of the head with its end engaging through axially alined holes in the plunger and driver-blade. f

12. In an implement of the type indicated, the combination of a frame having an upstanding head at one end formed with a vertical bore and `a vertical slot in the side of the head opening into the bore, a plunger slidable in said bore and iormedmith a diametrical slot at its lower end, a driver-blade inserted into said slot in the plunger, a'stud extending through the slot in the side of the head and through holes invthe plunger and blade to secure the latter to the plunger, a knob on the upper' end of the plunger, and a spring acting between the head and the, knob to maintain the plunger normally in raised position with the stud engaging the upper end of the slot in the head.-

' 13. In an implement of thel type indicated, the combination of -a frame having a. magazine for containing a supply of fasteners, a driver reciprol f cable on said frame across the end of the magaziief, means for successively feeding the fasteners in the magazine to deliver them into positionv beneath the driver, and a gate hinged to the frame to close the end of the magazine and provided with arelatively narrow throat for receiving the fasteners 4Vand guiding them at their'forward and rearward ,the gate and into the work. v 14. In an implement of the type indicated, the combination of a Wells adapted t0 be entered IIO the Chamber '01Ts containingfa supply of staples, a core in 'the the frame in spaced relation to the walls thereof. 8. In an implement of the type indicated, the

' vcombination of a frame having a chambered botest ` tom with flanges projectin'gflaterally from its sides, fastener-applying means carried by thel frame, and a core comprising a fiat base-plate adapted vtounderlie the bottom of the frame and magazinegforsupporting the staples ingalined relationship to adapt staple-driver reciprocable across the end yof the magazineto act on the staples fed therefrom, and a gate for 'closing the endof the magazine, said gate having a restricted passageway with forward and rearward walls between are guided in applying them to the work.

15. In an implement ',of the type indicated, the combination of a frame having `a magazine for containing a supply of staples, a staple-driver reciprocablel on the frame, a core magazine for supporting the staples in position to deliver them beneath the staple-driver, and a gate for closing the end of the magazine, said usides as they are driven down through-2 within the framehaving .a magazine for them to feed therealong, a Y

which the staples 40 the plunger.

16. yIn an implement of the type indicated, the

combination of a frame having a magazine for containing a supply of staples, a staple-driver reciprocable on the frame, a core in the magazine for supporting the staples in alined relationship staple-driver, a gate hinged to theframe and provided with alfront wall for closing the end of the magazine and abutments spaced rearwardly from said front wall a distance substantially l5 equal to the thickness of the staples to form narrow guideways for the down through the gate.

staples as they are driven 17. In an implement of the type indicated, the combination of a frame having a magazine for containing a supply of fasteners, said magazine being open at one end for the insertion of a spply of the fasteners, means reciprocable on the frame for applying the fasteners to the work, a gate hinged to the frame to adapt it to close the open end of the magazine, a plunger engaging the gate in one position to maintain it closed. and in another position to hold it open, and resilient means for operating the plunger.

18. In an implement of the type indicated, the

combination of a frame having a magazine for containing a supply of fasteners, said magazine being open at one end for the insertion of a supply of the fasteners, means reciprocable ondthe frame for applying the fasteners to the work, .a gate hinged to the frame to adapt it to close the open end oi' the magazine, said gate formed with Acamfaces, a slidable plunger adapted to engage the cam-faces onthe gate to maintain it in either closed or open position, and a spring for sliding 19. In an implement of the type indicated, the

' combination of a frame having a magazine for containing a supplyof fasteners, said magazine being open at one end for the insertion of a sup- 45 ply of fasteners, fastener-applying meansfcarried by the frame, a gate pivoted to close against the open end of the magazine and formed with a cam- .face, a plunger adapted to cam against said face on the gate to hold the latter in closed position,

50 and resilient Ameans for operating the plunger.

20. In an implement ofthe type indicated, the combination of a frame having a magazine for containing a supply of fasteners, fastener-applying means carried by said frame, a gate having 55 ears pivoted to the frame and said ears formed with arcuate and beveled cam-faces, a plunger slidable on the frame and formed with' a beveled face adapted to engage the beveled faces on the ears of the gate to hold the latter in closed posi- 60 tion and to ride onto the arcuate faces on the ears to maintain the gate in open position, and a spring for sliding the plunger.

21. In an implement of the type indicated, the

.combination of a frame lhaving almagazine for 6 5 containing a supply of fasteners, fastener-applyadapt them to be successively fed beneath the' ing means carried by said frame; means for feeding the fasteners in themagazine to deliver them to the applying means, a gate for closing the end of the magazine, retainer-means operative when the gate is opened to prevent the fasteners from being expelled from the magazine, and manuallyoperable means for releasing the retainer-means while the gate is open whereby to permit withdrawal of the fasteners from the magazine.

22. In an implement of the type indicated, the combination of a frame having a magazine for containing a supply of fasteners, fastener-applying means carried by said frame, means for feeding the fasteners in the magazine to deliver them to the applying means, a gate for closing the end of the magazine, a pawl engageable with the fasteners upon the opening of the gate to prevent them from being expelled from the magazine, and

manually-operable means for releasing the pawl to permit removal of the fasteners from the magazine.

23. In an implement of the type indicated, the combination of a frame having a magazine for containing a supply oi fasteners, fastener-applying means carried by the frame, means'for feeding the fasteners in the magazine'to deliver them to the applying means, a gate for closing the end of the magazine, said gate formed with at camface, a retainer-pawl engageable with the fasteners to prevent their expulsion from the magazine-when the gate is open, said pawl formed withv acam-face conforming substantially to the cam-face on the gate, and a plunger slidable on the frameto engage the cam-faces on the gate and pawl, said engagement acting to normally maintain the gate in closed position and the paw'l released from engagement with the fasteners.

24. In an implement of the type indicated, the combination of a frame having a magazine for containing a supply of fasteners, fastener-apply ing means carried by said frame, means for feeding the fasteners in the magazine to deliver them to the applying means, a gate hinged to the frame to adapt it to close against the end of the magazine and formed vwith a cam-face, a pawl piv.

oted to the frame to adapt it to engage the fasteners to prevent them from being expelled from the magazine when the gate is opened, said pawl having a cam-face adapted to aline with the camface on the gate, resilient means for operating the pawl, a plunger slidable on the frame and having a beveled face engaging the cam-faces on the gate and pawl, and a spring for sliding the plunger. p K l 25. A fastener-applying implement having a magazine for fasteners, means for applying the fasteners tothe work, means for feeding the fasteners to the applying means, a closure for the magazine, means for -retaining the fasteners in the magazine when the closure is opened, and means for releasing said last-named means while theclosure is open to permit withdrawal of the fasteners from the magazine.

lAR'I'IH'UR H. MAYNARD. 

